Storage battery.



`- obtain a high voltage.

frana unieron.

RUDOLPHE DRAMBOURG AND JOSEPH E. REID, OF NEW YORK, N. Y

- STORAGE BATTERY.

Specification of Letters Eatent.

illatentcd Jan. @6, MM5.

Application filed June 19, 1913. Serial No. 774,657.

To a7] f/m/n if may concern.

lle 1t known that we, RUnonrHn DRAM- nouno and Josera E. Rein, citizens of the.

provement in Storage Batteries, of which the following is a specification.

This invention relates to storage batteries and'more particularly to electrodes therefor, with the object in view ot providing means for producing a single cell battery of almost unlimited voltage. Another object is to provide certain improvements in the construction, forni and arrangement of the several parts for effectively carrying out the first mentioned object.

ini-storage batteries it has been necessary to connect up a plurality of cells in order to This has increased the ibulk and weight of the battery as a whole to a great ement, these increases negativing the gain and advantages obtained under many circumstances from the higher voltage.

By our invention, which relates to an electrode to be used in storage batteries, it

is perfectly feasible to obtain very high '.cell of twelve or more volts; though this is not by any means the upper limit.

lroadly considered, the construction of our electrode includes a hollow liquid tight shell or casingV composed of some suitable lead-like material, and two slabs therein also composed of suitable lead-like material: the two slabs being provided with terminals, and the shell or casing also being provided with a terminal for use under certain conditions. The shell is intended to be filled with electrolyte to cover the two slabs within it.

A practical embodiment ot' the invention is represented in the accompanying drawing* in which,

Figure 1 represents a top plan view of a cell including two ,of Iour .hollow units and two plates. Fig. 2 represents a vertical sec- Fig. 4 represents a vertical section therethrough, and' Fig. ."3 represents a side elevation of one'of the plates.

`The cell ot the battery is denoted by l, and may' consistoi' a vessel ot `elass or other suitable'material ot any desired form, the form shown being conventional. This cell l is adapted to hold electrolyte in which .is submerged, in the present instance, two o'f the hollow units and two plates.

The present invention being directed to the construction of the hollow units, one of these will now be described in detail, reference being had particularly to Figs. 3 and 4, which clearly show the construction.

Each unit comprises a shell or casingr 2, which is i'ircferably formed in two halves having peripheral flanges 3, adapted to abut each other and be fused together for holding the two halves firmly in a hollow liquidtig'ht unit. The shell or casingl 2 may be composed oi" any suitable lead-like material, but we prefer to use material consisting of a nti mony, iron pyrite (fools gol d) with the mica removed, and lead, in substantially theproportions of fiveper cent. (5%) antimony. ten per cent. (10%) iron pyrite with the mica removed. and eighty-five per cent. (85%) lead. lithin the'sl'icll "l, are located two similar fiat slabs 4, which are composed of any suitable lead-like material, but preferably of the saine material as the shell 2. These slabs 4. 5, havetheir edges covered by strips (i, 7, of rubber-.or other appropriate insulating material, the bottom strips being utilized as a means ior supporting the slabs 4, 5, on the bottom of the shell 2.

Thin sheets S ot insulating material, such as perforated hardrubber. are also interposed betwcen the two slabs 4, i3', and between each slab 4 and 5 and the adjacent wall of the shell 2, in order toy positively prevent any buckling' ot the slabs, which might arise from careless handling, from bringing about electrica-l contact between the slabs 4 and 5, or between either slab and the shell 9..

The slab 4 may be provided with a suitable terminal 9, the slab 5 with a suitable terminal 10, and the shell 2 with a suitable terminal il.

Referringr now to the plate shownl in Fig. 5, it comprises a hollow frame 12., a center piece 13, held in the frame 12 by neck pieces,

and preferal'ily'of the same composition as recited above in connection with the shell 2,

. connecting wire 16.

the hollow units are placedin the cell 1, be'

ing supported on the bottom thereof by in sulating strips 17 fitted on their flanges 3. Interposed between these two units are two of the plates which are also supported on the bottoin'of the cell 1, by suitable insulat ing strips 18, engaging legs 19 on the saidplates. Three sheets 2O of insulating material, such as rubber, are positioned so as to keep the four electrodes' out of electrical contact with each other. As thus constructed, the terminal' 10 on the slab 5 in one of the hollow `units, constitutes `the positive terminal for the cell as a whole, and the terminal 10 on the slab 5 in the other hollow unit 4constitutes the negative terminal of the cell as a whole. These terminals may be connected by wires 21, in any desired manner for utilizing the energy of the cell. The slab 4in :one of the hollow units may be connected by the wire 16, with one of the plates; and the slabv 4 in the other hollow ,unit may be connected with the other plate by the other wire 16. As thus constituted, the slab 5 4in one of the units is positive in character, and the shell 2 of that unit is also positive Lin character. The slab 4 in the same unit is negati-ve -in character and the .plate to which it is connected is negative in character. The slab 5 in the other hollow unitwill be negative in character, and the shell of that unit will also be negative in character; while the slab 4 in that plate will be positive in character, and the plate to which it is connected, will be positive in character. Each of the slabs 4, 5, will deliver one volt, each of the shells 2 one volt, and each of the plates one volt.- Therefore, this cell will deliver eight volts. It will be remarked that the voltageof the cell may be indefinitely increased by adding more of the hollow units, and the amperage may be greatly increased by adding more of. the plates. However, mention should be made the.

of the fact that the plates will only give two volts, no matter how many may be used.

The cell and the hollow units are, as indicated above, filled with suitable electrolyte; and we prefer to use an electrolyte which comprises bichromate of potash, sulfuric. acid and water in substantially the proportions of five per cent. (5%) bichromate of potash, twenty per cent. (20%) sulfuric acid and seventy-five per cent. water.

By our invention weare enabled to get a. single cell battery of extremely high voltage; and the increase in weight and bulk is not more than substantially one half the increase in weight and bulkrequired in connecting separate cells of two volts eachv so as to' form a battery producing the Vsame voltage as our single cell.

)Ve desire it to be understood that various changes may be resorted to in the form, construction, composition and arrangement of the several parts without departing from the spirit and scope of our invention, and hence we do not wish to limit ourselves to the form `herein shown and described, ex-

cept as it may be specifically set :forth in the and a slab in another casing constituting the other pole of' the battery.

2. A storage battery comprisingl a cell filled with electrolyte, and. avplurality of electrodes within said cell immersed in said electrolyte, each of said electrodes consisting of a hollow casing filled with electrolyte and a pair of slabs ivithin said casing i1ninerscd in the electrolyte, said -slabs being of different polarity and one of said slabs being of the same polarity as the casing, a slab in one casing constituting one pole of the battery and a slab in the other casing constituting the other pole of the battery.

4In testimony, that we claim the foregoing' as our invention, ive have signed oiir names `inpresence of two witnesses, this "eleventh day of June, 1913.

RUDOLPHE DRAMBOURG. JOSEPH E. REID.

Witnesses:

F. GEORGE BARRY, HENRY C. THIEME.

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